General help building EA model for Developers

[Scott C]

Hi guys,
I'm an EA newbie and a VB programmer trying to model a system in EA for a team of C# developers in an Object Orientated world. What a learning curve.   My main focus to date has been on Requirements, Use Case Scenarios, Sequence Diagrams and the Domain Model Class Diagram. The object is to get the design of the system out of my head and into a model which can be used effectively by the developers. I'm also experimenting with the Business Rule composer to see what sort of code output we can get from that into our classes (I need to get the rules out of my head and into the model). I'm generating C# code from classes and trying to get validation and exception handling code to generate in the auto generated property set statements. I've tried using constraints on the properties but that doesn't appear to change anything in the class code. So I guess I'm looking for someone to push me in the direction of some information that may help me to not only use EA to model the system in a way that will be useful to the Developers, but how to get the most out of auto generating the classes when I get the model right. Big ask, I know and I apologise if I'm not being specific enough. I just feel like I may be missing something and hate wasting time.
Thanks for any help
Scott